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POHow to set widget properties with `enum` type like `GtkAttachOptions`? I'm trying to simulate `gtk_widget_set_vexpand` to work on `gtk2`
 

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  1. POHow to set widget properties with `enum` type like `GtkAttachOptions`? I'm trying to simulate `gtk_widget_set_vexpand` to work on `gtk2`
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    <p>My project was to create a graphical application to help each employee to create his own list of clients in a central database and the only problem I had was with the compatibility between <code>gtk3</code> and <code>gtk2</code>. The project from beginning to end is based on <code>gtk3</code> and then I realized that there are employees who use a system with <code>gtk2</code> only. So I made some modifications to the implementation without much difficulty and works without any problem on its purpose. The last thing that I want to finish, is to simulate the function of the <a href="http://developer.gnome.org/gtk3/3.6/GtkWidget.html#gtk-widget-get-hexpand" rel="nofollow"><code>gtk_widget_get_hexpand()</code></a> and <a href="http://developer.gnome.org/gtk3/3.6/GtkWidget.html#gtk-widget-get-vexpand" rel="nofollow"><code>gtk_widget_get_vexpand()</code></a> ... they are only in <code>gtk3</code>. For the other functions to work the same way as in <code>gtk3</code> i did something like this:</p> <pre><code>#define gtk_grid_new() gtk_table_new(1,1,false) #define GTK_GRID(x) GTK_TABLE(x) #define GtkGrid GtkTable #define gtk_grid_attach(x1,x2,x3,x4,x5,x6) gtk_table_attach(x1,x2,x3,x3+x5,x4,x4+x6,GTK_FILL,GTK_FILL,0,0) </code></pre> <p>To let the application work without the <code>gtk_widget_get_hexpand()</code> and <code>gtk_widget_get_hexpand()</code> functions, simply with:</p> <pre><code>#define gtk_widget_set_hexpand(x1,x2) #define gtk_widget_set_vexpand(x1,x2) </code></pre> <p>Because is little more complex to simulate these functions with macros i tried to do something like this:</p> <pre><code>inline void gtk_widget_set_hexpand(GtkWidget* widget,gboolean expanded) { GValue value = G_VALUE_INIT; g_value_init(&amp;value,G_TYPE_ENUM); if(expanded) g_value_set_enum(&amp;value,GTK_EXPAND); else g_value_set_enum(&amp;value,GTK_FILL); gtk_container_child_set_property(GTK_CONTAINER(gtk_widget_get_parent(widget)),widget,"x-options",&amp;value); } inline void gtk_widget_set_vexpand(GtkWidget* widget,gboolean expanded) { GValue value = G_VALUE_INIT; g_value_init(&amp;value,G_TYPE_ENUM); if(expanded) g_value_set_enum(&amp;value,GTK_EXPAND); else g_value_set_enum(&amp;value,GTK_FILL); gtk_container_child_set_property(GTK_CONTAINER(gtk_widget_get_parent(widget)),widget,"y-options",&amp;value); } </code></pre> <p><a href="http://developer.gnome.org/gtk3/3.6/GtkContainer.html#gtk-container-child-set-property" rel="nofollow"><code>gtk_container_child_set_property()</code></a></p> <p>I know that it is not correct! Actually i don't know how to set the <code>child properties</code> of the <code>widgets</code> and more specific how to create a <code>GValue</code> with <code>G_TYPE_ENUM</code>. Can someone help me?</p> <p>UPDATE: @ptomato gave me a better solution on this. Actually by using the <a href="http://developer.gnome.org/gtk3/3.6/GtkContainer.html#gtk-container-child-set" rel="nofollow"><code>gtk_container_child_set()</code></a> function instead of the <code>gtk_container_child_set_property()</code> then:</p> <pre><code>#define gtk_widget_set_hexpand(x1,x2) gtk_container_child_set(GTK_CONTAINER(gtk_widget_get_parent(x1)),x1,"x-options",(x2)?(GTK_FILL|GTK_EXPAND):GTK_FILL,NULL); #define gtk_widget_set_vexpand(x1,x2) gtk_container_child_set(GTK_CONTAINER(gtk_widget_get_parent(x1)),x1,"y-options",(x2)?(GTK_FILL|GTK_EXPAND):GTK_FILL,NULL); </code></pre> <p>does the trick successfully! Thanks to @ptomato!</p>
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